X-Git-Url: https://hackdaworld.org/gitweb/?p=lectures%2Flatex.git;a=blobdiff_plain;f=posic%2Fthesis%2Fbasics.tex;h=c88c6c58f42e5af3ede2c10dbfb0cc5a8c2809d3;hp=57f92d4f701256eb12a8a3408e10571d7c8eaad9;hb=515fa83847d7436cf7f08273a8e8ce0aa33b13de;hpb=e2dbaa91551af6258f3de4dcf24ecfc6ed3ac9ff diff --git a/posic/thesis/basics.tex b/posic/thesis/basics.tex index 57f92d4..c88c6c5 100644 --- a/posic/thesis/basics.tex +++ b/posic/thesis/basics.tex @@ -121,7 +121,7 @@ The attractive part is associated with the bonding. f_R(r_{ij}) & = & A_{ij} \exp (- \lambda_{ij} r_{ij} ) \\ f_A(r_{ij}) & = & -B_{ij} \exp (- \mu_{ij} r_{ij} ) \end{eqnarray} -The function $f_C$ is a cutoff function to limit the range of interaction to nearest neighbors. +The function $f_C$ is a cut-off function to limit the range of interaction to nearest neighbors. It is designed to have a smooth transition of the potential at distances $R_{ij}$ and $S_{ij}$. \begin{equation} f_C(r_{ij}) = \left\{ @@ -133,7 +133,7 @@ f_C(r_{ij}) = \left\{ \label{eq:basics:fc} \end{equation} As discussed above, $b_{ij}$ represents a measure of the bond order, monotonously decreasing with the coordination of atoms $i$ and $j$. -It is of the form: +It is of the form \begin{eqnarray} b_{ij} & = & \chi_{ij} (1 + \beta_i^{n_i} \zeta^{n_i}_{ij})^{-1/2n_i} \\ \zeta_{ij} & = & \sum_{k \ne i,j} f_C (r_{ik}) \omega_{ik} g(\theta_{ijk}) \\